<table border="1" mj_done="true">
    <thead>
    <tr>
        <th>序号</th>
        <th>编号</th>
        <th>题目</th>
        <th>题解</th>
        <th>通过率</th>
        <th>难度</th>
        <th>出现频率</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td>1</td>
        <td>1</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/two-sum">两数之和</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/two-sum/solution">1344</a></td>
        <td>47.5%</td>
        <td>简单</td>
        <td>2.1889341122</td>
    </tr>
    <tr>
        <td>2</td>
        <td>5</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-palindromic-substring">最长回文子串</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-palindromic-substring/solution">461</a>
        </td>
        <td>28.4%</td>
        <td>中等</td>
        <td>2.0203083813</td>
    </tr>
    <tr>
        <td>3</td>
        <td>149</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/max-points-on-a-line">直线上最多的点数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/max-points-on-a-line/solution">47</a></td>
        <td>20.4%</td>
        <td>困难</td>
        <td>2.0141849897</td>
    </tr>
    <tr>
        <td>4</td>
        <td>146</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/lru-cache">LRU缓存机制</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/lru-cache/solution">119</a></td>
        <td>45.4%</td>
        <td>中等</td>
        <td>1.9674998373</td>
    </tr>
    <tr>
        <td>5</td>
        <td>206</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-linked-list">反转链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-linked-list/solution">377</a></td>
        <td>66.9%</td>
        <td>简单</td>
        <td>1.9520710999</td>
    </tr>
    <tr>
        <td>6</td>
        <td>269</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/alien-dictionary">火星词典</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/alien-dictionary/solution">20</a></td>
        <td>39.6%</td>
        <td>困难</td>
        <td>1.9021942002</td>
    </tr>
    <tr>
        <td>7</td>
        <td>4</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/median-of-two-sorted-arrays">寻找两个有序数组的中位数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/median-of-two-sorted-arrays/solution">502</a></td>
        <td>36.7%</td>
        <td>困难</td>
        <td>1.8946257527</td>
    </tr>
    <tr>
        <td>8</td>
        <td>3</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-substring-without-repeating-characters">无重复字符的最长子串</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-substring-without-repeating-characters/solution">1013</a>
        </td>
        <td>32.8%</td>
        <td>中等</td>
        <td>1.8849896566</td>
    </tr>
    <tr>
        <td>9</td>
        <td>42</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/trapping-rain-water">接雨水</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/trapping-rain-water/solution">261</a></td>
        <td>48.4%</td>
        <td>困难</td>
        <td>1.8281795578</td>
    </tr>
    <tr>
        <td>10</td>
        <td>2</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/add-two-numbers">两数相加</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/add-two-numbers/solution">1083</a></td>
        <td>36.6%</td>
        <td>中等</td>
        <td>1.7696470743</td>
    </tr>
    <tr>
        <td>11</td>
        <td>53</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-subarray">最大子序和</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-subarray/solution">439</a></td>
        <td>49.0%</td>
        <td>简单</td>
        <td>1.5319351236</td>
    </tr>
    <tr>
        <td>12</td>
        <td>15</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/3sum">三数之和</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/3sum/solution">399</a></td>
        <td>25.4%</td>
        <td>中等</td>
        <td>1.5285146455</td>
    </tr>
    <tr>
        <td>13</td>
        <td>179</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/largest-number">最大数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/largest-number/solution">83</a></td>
        <td>35.2%</td>
        <td>中等</td>
        <td>1.5213543589</td>
    </tr>
    <tr>
        <td>14</td>
        <td>23</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-k-sorted-lists">合并K个排序链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-k-sorted-lists/solution">270</a></td>
        <td>48.7%</td>
        <td>困难</td>
        <td>1.4721839925</td>
    </tr>
    <tr>
        <td>15</td>
        <td>21</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-two-sorted-lists">合并两个有序链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-two-sorted-lists/solution">432</a></td>
        <td>59.5%</td>
        <td>简单</td>
        <td>1.4564985646</td>
    </tr>
    <tr>
        <td>16</td>
        <td>46</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/permutations">全排列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/permutations/solution">305</a></td>
        <td>73.9%</td>
        <td>中等</td>
        <td>1.4501271613</td>
    </tr>
    <tr>
        <td>17</td>
        <td>322</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/coin-change">零钱兑换</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/coin-change/solution">122</a></td>
        <td>37.4%</td>
        <td>中等</td>
        <td>1.4309076858</td>
    </tr>
    <tr>
        <td>18</td>
        <td>54</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/spiral-matrix">螺旋矩阵</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/spiral-matrix/solution">216</a></td>
        <td>38.5%</td>
        <td>中等</td>
        <td>1.4287450495</td>
    </tr>
    <tr>
        <td>19</td>
        <td>300</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-increasing-subsequence">最长上升子序列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-increasing-subsequence/solution">118</a>
        </td>
        <td>43.9%</td>
        <td>中等</td>
        <td>1.4269760533</td>
    </tr>
    <tr>
        <td>20</td>
        <td>124</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-maximum-path-sum">二叉树中的最大路径和</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-maximum-path-sum/solution">109</a>
        </td>
        <td>39.1%</td>
        <td>困难</td>
        <td>1.3908085092</td>
    </tr>
    <tr>
        <td>21</td>
        <td>148</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sort-list">排序链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sort-list/solution">136</a></td>
        <td>63.7%</td>
        <td>中等</td>
        <td>1.3391574056</td>
    </tr>
    <tr>
        <td>22</td>
        <td>70</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/climbing-stairs">爬楼梯</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/climbing-stairs/solution">399</a></td>
        <td>47.8%</td>
        <td>简单</td>
        <td>1.2952453493</td>
    </tr>
    <tr>
        <td>23</td>
        <td>218</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/the-skyline-problem">天际线问题</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/the-skyline-problem/solution">35</a></td>
        <td>40.2%</td>
        <td>困难</td>
        <td>1.2940165218</td>
    </tr>
    <tr>
        <td>24</td>
        <td>20</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-parentheses">有效的括号</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-parentheses/solution">752</a></td>
        <td>40.8%</td>
        <td>简单</td>
        <td>1.2718832433</td>
    </tr>
    <tr>
        <td>25</td>
        <td>378</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-smallest-element-in-a-sorted-matrix">有序矩阵中第K小的元素</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-smallest-element-in-a-sorted-matrix/solution">59</a>
        </td>
        <td>57.9%</td>
        <td>中等</td>
        <td>1.2697081508</td>
    </tr>
    <tr>
        <td>26</td>
        <td>200</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/number-of-islands">岛屿数量</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/number-of-islands/solution">191</a></td>
        <td>46.9%</td>
        <td>中等</td>
        <td>1.2668480289</td>
    </tr>
    <tr>
        <td>27</td>
        <td>11</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/container-with-most-water">盛最多水的容器</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/container-with-most-water/solution">404</a></td>
        <td>61.1%</td>
        <td>中等</td>
        <td>1.2651527579</td>
    </tr>
    <tr>
        <td>28</td>
        <td>253</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/meeting-rooms-ii">会议室 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/meeting-rooms-ii/solution">48</a></td>
        <td>40.9%</td>
        <td>中等</td>
        <td>1.2378825693</td>
    </tr>
    <tr>
        <td>29</td>
        <td>76</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/minimum-window-substring">最小覆盖子串</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/minimum-window-substring/solution">87</a></td>
        <td>35.3%</td>
        <td>困难</td>
        <td>1.1898471973</td>
    </tr>
    <tr>
        <td>30</td>
        <td>10</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/regular-expression-matching">正则表达式匹配</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/regular-expression-matching/solution">213</a></td>
        <td>26.0%</td>
        <td>困难</td>
        <td>1.1896164059</td>
    </tr>
    <tr>
        <td>31</td>
        <td>329</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix">矩阵中的最长递增路径</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix/solution">29</a></td>
        <td>39.6%</td>
        <td>困难</td>
        <td>1.1847089541</td>
    </tr>
    <tr>
        <td>32</td>
        <td>88</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-sorted-array">合并两个有序数组</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-sorted-array/solution">386</a></td>
        <td>46.5%</td>
        <td>简单</td>
        <td>1.1814325538</td>
    </tr>
    <tr>
        <td>33</td>
        <td>91</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/decode-ways">解码方法</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/decode-ways/solution">169</a></td>
        <td>23.0%</td>
        <td>中等</td>
        <td>1.1462227527</td>
    </tr>
    <tr>
        <td>34</td>
        <td>7</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-integer">整数反转</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-integer/solution">799</a></td>
        <td>33.6%</td>
        <td>简单</td>
        <td>1.13986536</td>
    </tr>
    <tr>
        <td>35</td>
        <td>215</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-largest-element-in-an-array">数组中的第K个最大元素</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-largest-element-in-an-array/solution">229</a>
        </td>
        <td>60.9%</td>
        <td>中等</td>
        <td>1.1336727864</td>
    </tr>
    <tr>
        <td>36</td>
        <td>279</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/perfect-squares">完全平方数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/perfect-squares/solution">115</a></td>
        <td>53.4%</td>
        <td>中等</td>
        <td>1.1324844986</td>
    </tr>
    <tr>
        <td>37</td>
        <td>121</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock">买卖股票的最佳时机</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock/solution">323</a>
        </td>
        <td>52.3%</td>
        <td>简单</td>
        <td>1.0897958603</td>
    </tr>
    <tr>
        <td>38</td>
        <td>19</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list">删除链表的倒数第N个节点</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list/solution">484</a>
        </td>
        <td>37.4%</td>
        <td>中等</td>
        <td>1.0896915712</td>
    </tr>
    <tr>
        <td>39</td>
        <td>44</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/wildcard-matching">通配符匹配</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/wildcard-matching/solution">75</a></td>
        <td>26.4%</td>
        <td>困难</td>
        <td>1.0735219239</td>
    </tr>
    <tr>
        <td>40</td>
        <td>315</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self">计算右侧小于当前元素的个数</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self/solution">67</a></td>
        <td>37.2%</td>
        <td>困难</td>
        <td>1.0705935498</td>
    </tr>
    <tr>
        <td>41</td>
        <td>94</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-inorder-traversal">二叉树的中序遍历</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-inorder-traversal/solution">205</a>
        </td>
        <td>70.0%</td>
        <td>中等</td>
        <td>1.0668499283</td>
    </tr>
    <tr>
        <td>42</td>
        <td>22</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/generate-parentheses">括号生成</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/generate-parentheses/solution">360</a></td>
        <td>73.2%</td>
        <td>中等</td>
        <td>1.0368498015</td>
    </tr>
    <tr>
        <td>43</td>
        <td>33</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/search-in-rotated-sorted-array">搜索旋转排序数组</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/search-in-rotated-sorted-array/solution">278</a>
        </td>
        <td>36.3%</td>
        <td>中等</td>
        <td>1.031769043</td>
    </tr>
    <tr>
        <td>44</td>
        <td>202</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/happy-number">快乐数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/happy-number/solution">166</a></td>
        <td>57.1%</td>
        <td>简单</td>
        <td>1.0310573519</td>
    </tr>
    <tr>
        <td>45</td>
        <td>56</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-intervals">合并区间</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/merge-intervals/solution">217</a></td>
        <td>40.2%</td>
        <td>中等</td>
        <td>0.9987467431</td>
    </tr>
    <tr>
        <td>46</td>
        <td>227</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/basic-calculator-ii">基本计算器 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/basic-calculator-ii/solution">52</a></td>
        <td>34.7%</td>
        <td>中等</td>
        <td>0.9787860006</td>
    </tr>
    <tr>
        <td>47</td>
        <td>239</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sliding-window-maximum">滑动窗口最大值</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sliding-window-maximum/solution">142</a></td>
        <td>43.7%</td>
        <td>困难</td>
        <td>0.9639844096</td>
    </tr>
    <tr>
        <td>48</td>
        <td>17</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number">电话号码的字母组合</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number/solution">431</a>
        </td>
        <td>52.4%</td>
        <td>中等</td>
        <td>0.9622934701</td>
    </tr>
    <tr>
        <td>49</td>
        <td>308</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/range-sum-query-2d-mutable">二维区域和检索 - 可变</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/range-sum-query-2d-mutable/solution">15</a></td>
        <td>55.4%</td>
        <td>困难</td>
        <td>0.948572222</td>
    </tr>
    <tr>
        <td>50</td>
        <td>128</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-consecutive-sequence">最长连续序列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-consecutive-sequence/solution">83</a></td>
        <td>47.6%</td>
        <td>困难</td>
        <td>0.9398070789</td>
    </tr>
    <tr>
        <td>51</td>
        <td>41</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/first-missing-positive">缺失的第一个正数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/first-missing-positive/solution">219</a></td>
        <td>37.5%</td>
        <td>困难</td>
        <td>0.9380478031</td>
    </tr>
    <tr>
        <td>52</td>
        <td>289</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/game-of-life">生命游戏</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/game-of-life/solution">72</a></td>
        <td>68.5%</td>
        <td>中等</td>
        <td>0.9357757327</td>
    </tr>
    <tr>
        <td>53</td>
        <td>240</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/search-a-2d-matrix-ii">搜索二维矩阵 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/search-a-2d-matrix-ii/solution">66</a></td>
        <td>38.7%</td>
        <td>中等</td>
        <td>0.9225777056</td>
    </tr>
    <tr>
        <td>54</td>
        <td>152</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-product-subarray">乘积最大子序列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-product-subarray/solution">107</a></td>
        <td>37.0%</td>
        <td>中等</td>
        <td>0.9187712368</td>
    </tr>
    <tr>
        <td>55</td>
        <td>78</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/subsets">子集</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/subsets/solution">213</a></td>
        <td>76.3%</td>
        <td>中等</td>
        <td>0.9177142784</td>
    </tr>
    <tr>
        <td>56</td>
        <td>384</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/shuffle-an-array">打乱数组</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/shuffle-an-array/solution">27</a></td>
        <td>49.3%</td>
        <td>中等</td>
        <td>0.9145202935</td>
    </tr>
    <tr>
        <td>57</td>
        <td>8</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/string-to-integer-atoi">字符串转换整数 (atoi)</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/string-to-integer-atoi/solution">470</a></td>
        <td>19.0%</td>
        <td>中等</td>
        <td>0.9029406695</td>
    </tr>
    <tr>
        <td>58</td>
        <td>55</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/jump-game">跳跃游戏</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/jump-game/solution">252</a></td>
        <td>38.0%</td>
        <td>中等</td>
        <td>0.8958983408</td>
    </tr>
    <tr>
        <td>59</td>
        <td>48</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/rotate-image">旋转图像</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/rotate-image/solution">248</a></td>
        <td>66.7%</td>
        <td>中等</td>
        <td>0.894511925</td>
    </tr>
    <tr>
        <td>60</td>
        <td>212</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-search-ii">单词搜索 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-search-ii/solution">46</a></td>
        <td>39.1%</td>
        <td>困难</td>
        <td>0.8899547869</td>
    </tr>
    <tr>
        <td>61</td>
        <td>138</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/copy-list-with-random-pointer">复制带随机指针的链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/copy-list-with-random-pointer/solution">66</a>
        </td>
        <td>43.6%</td>
        <td>中等</td>
        <td>0.8865889053</td>
    </tr>
    <tr>
        <td>62</td>
        <td>84</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/largest-rectangle-in-histogram">柱状图中最大的矩形</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/largest-rectangle-in-histogram/solution">108</a>
        </td>
        <td>38.7%</td>
        <td>困难</td>
        <td>0.8864621548</td>
    </tr>
    <tr>
        <td>63</td>
        <td>140</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-break-ii">单词拆分 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-break-ii/solution">55</a></td>
        <td>37.7%</td>
        <td>困难</td>
        <td>0.8829744014</td>
    </tr>
    <tr>
        <td>64</td>
        <td>79</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-search">单词搜索</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-search/solution">124</a></td>
        <td>40.4%</td>
        <td>中等</td>
        <td>0.8723631315</td>
    </tr>
    <tr>
        <td>65</td>
        <td>102</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-level-order-traversal">二叉树的层次遍历</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/binary-tree-level-order-traversal/solution">245</a></td>
        <td>60.7%</td>
        <td>中等</td>
        <td>0.8706425694</td>
    </tr>
    <tr>
        <td>66</td>
        <td>62</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/unique-paths">不同路径</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/unique-paths/solution">245</a></td>
        <td>58.7%</td>
        <td>中等</td>
        <td>0.8593398028</td>
    </tr>
    <tr>
        <td>67</td>
        <td>103</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal">二叉树的锯齿形层次遍历</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/binary-tree-zigzag-level-order-traversal/solution">182</a></td>
        <td>53.4%</td>
        <td>中等</td>
        <td>0.8589454902</td>
    </tr>
    <tr>
        <td>68</td>
        <td>287</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-the-duplicate-number">寻找重复数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-the-duplicate-number/solution">116</a></td>
        <td>62.8%</td>
        <td>中等</td>
        <td>0.8513433097</td>
    </tr>
    <tr>
        <td>69</td>
        <td>104</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-depth-of-binary-tree">二叉树的最大深度</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/solution">317</a>
        </td>
        <td>72.1%</td>
        <td>简单</td>
        <td>0.8451670423</td>
    </tr>
    <tr>
        <td>70</td>
        <td>204</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/count-primes">计数质数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/count-primes/solution">73</a></td>
        <td>32.1%</td>
        <td>简单</td>
        <td>0.8406553438</td>
    </tr>
    <tr>
        <td>71</td>
        <td>454</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/4sum-ii">四数相加 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/4sum-ii/solution">52</a></td>
        <td>54.1%</td>
        <td>中等</td>
        <td>0.8363504395</td>
    </tr>
    <tr>
        <td>72</td>
        <td>395</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-substring-with-at-least-k-repeating-characters">至少有K个重复字符的最长子串</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-substring-with-at-least-k-repeating-characters/solution">28</a>
        </td>
        <td>41.4%</td>
        <td>中等</td>
        <td>0.8303010583</td>
    </tr>
    <tr>
        <td>73</td>
        <td>105</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal">从前序与中序遍历序列构造二叉树</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/solution">124</a>
        </td>
        <td>63.9%</td>
        <td>中等</td>
        <td>0.819656681</td>
    </tr>
    <tr>
        <td>74</td>
        <td>236</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree">二叉树的最近公共祖先</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree/solution">107</a>
        </td>
        <td>59.7%</td>
        <td>中等</td>
        <td>0.8093212366</td>
    </tr>
    <tr>
        <td>75</td>
        <td>234</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/palindrome-linked-list">回文链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/palindrome-linked-list/solution">248</a></td>
        <td>40.2%</td>
        <td>简单</td>
        <td>0.8088869638</td>
    </tr>
    <tr>
        <td>76</td>
        <td>208</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/implement-trie-prefix-tree">实现 Trie (前缀树)</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/implement-trie-prefix-tree/solution">97</a></td>
        <td>64.3%</td>
        <td>中等</td>
        <td>0.7853247832</td>
    </tr>
    <tr>
        <td>77</td>
        <td>139</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-break">单词拆分</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-break/solution">112</a></td>
        <td>43.1%</td>
        <td>中等</td>
        <td>0.7832757775</td>
    </tr>
    <tr>
        <td>78</td>
        <td>101</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/symmetric-tree">对称二叉树</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/symmetric-tree/solution">263</a></td>
        <td>49.9%</td>
        <td>简单</td>
        <td>0.7800227391</td>
    </tr>
    <tr>
        <td>79</td>
        <td>141</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/linked-list-cycle">环形链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/linked-list-cycle/solution">285</a></td>
        <td>46.1%</td>
        <td>简单</td>
        <td>0.7752874285</td>
    </tr>
    <tr>
        <td>80</td>
        <td>198</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/house-robber">打家劫舍</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/house-robber/solution">283</a></td>
        <td>42.8%</td>
        <td>简单</td>
        <td>0.7744855371</td>
    </tr>
    <tr>
        <td>81</td>
        <td>162</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-peak-element">寻找峰值</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-peak-element/solution">85</a></td>
        <td>44.3%</td>
        <td>中等</td>
        <td>0.7696853019</td>
    </tr>
    <tr>
        <td>82</td>
        <td>155</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/min-stack">最小栈</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/min-stack/solution">223</a></td>
        <td>51.4%</td>
        <td>简单</td>
        <td>0.7685914236</td>
    </tr>
    <tr>
        <td>83</td>
        <td>14</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-common-prefix">最长公共前缀</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/longest-common-prefix/solution">534</a></td>
        <td>36.1%</td>
        <td>简单</td>
        <td>0.7530761765</td>
    </tr>
    <tr>
        <td>84</td>
        <td>131</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/palindrome-partitioning">分割回文串</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/palindrome-partitioning/solution">71</a></td>
        <td>65.1%</td>
        <td>中等</td>
        <td>0.7510673929</td>
    </tr>
    <tr>
        <td>85</td>
        <td>136</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/single-number">只出现一次的数字</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/single-number/solution">292</a></td>
        <td>65.1%</td>
        <td>简单</td>
        <td>0.7349525414</td>
    </tr>
    <tr>
        <td>86</td>
        <td>50</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/powx-n">Pow(x, n)</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/powx-n/solution">141</a></td>
        <td>33.8%</td>
        <td>中等</td>
        <td>0.718062288</td>
    </tr>
    <tr>
        <td>87</td>
        <td>251</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/flatten-2d-vector">展开二维向量</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/flatten-2d-vector/solution">14</a></td>
        <td>51.2%</td>
        <td>中等</td>
        <td>0.7064494978</td>
    </tr>
    <tr>
        <td>88</td>
        <td>13</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/roman-to-integer">罗马数字转整数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/roman-to-integer/solution">689</a></td>
        <td>60.6%</td>
        <td>简单</td>
        <td>0.7036946115</td>
    </tr>
    <tr>
        <td>89</td>
        <td>118</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/pascals-triangle">杨辉三角</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/pascals-triangle/solution">249</a></td>
        <td>65.6%</td>
        <td>简单</td>
        <td>0.6967394169</td>
    </tr>
    <tr>
        <td>90</td>
        <td>295</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-median-from-data-stream">数据流的中位数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-median-from-data-stream/solution">49</a></td>
        <td>42.0%</td>
        <td>困难</td>
        <td>0.6946945962</td>
    </tr>
    <tr>
        <td>91</td>
        <td>344</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-string">反转字符串</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-string/solution">274</a></td>
        <td>68.9%</td>
        <td>简单</td>
        <td>0.6946453724</td>
    </tr>
    <tr>
        <td>92</td>
        <td>28</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/implement-strstr">实现 strStr()</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/implement-strstr/solution">430</a></td>
        <td>39.5%</td>
        <td>简单</td>
        <td>0.677526337</td>
    </tr>
    <tr>
        <td>93</td>
        <td>134</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/gas-station">加油站</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/gas-station/solution">84</a></td>
        <td>50.8%</td>
        <td>中等</td>
        <td>0.6680034353</td>
    </tr>
    <tr>
        <td>94</td>
        <td>160</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/intersection-of-two-linked-lists">相交链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/intersection-of-two-linked-lists/solution">223</a>
        </td>
        <td>52.1%</td>
        <td>简单</td>
        <td>0.6586581012</td>
    </tr>
    <tr>
        <td>95</td>
        <td>38</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/count-and-say">外观数列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/count-and-say/solution">433</a></td>
        <td>54.4%</td>
        <td>简单</td>
        <td>0.6578467064</td>
    </tr>
    <tr>
        <td>96</td>
        <td>169</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/majority-element">多数元素</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/majority-element/solution">258</a></td>
        <td>61.5%</td>
        <td>简单</td>
        <td>0.6565892281</td>
    </tr>
    <tr>
        <td>97</td>
        <td>26</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array">删除排序数组中的重复项</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array/solution">665</a></td>
        <td>48.4%</td>
        <td>简单</td>
        <td>0.6550995136</td>
    </tr>
    <tr>
        <td>98</td>
        <td>350</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/intersection-of-two-arrays-ii">两个数组的交集 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/intersection-of-two-arrays-ii/solution">177</a>
        </td>
        <td>46.4%</td>
        <td>简单</td>
        <td>0.6426060637</td>
    </tr>
    <tr>
        <td>99</td>
        <td>130</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/surrounded-regions">被围绕的区域</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/surrounded-regions/solution">85</a></td>
        <td>39.0%</td>
        <td>中等</td>
        <td>0.6379941028</td>
    </tr>
    <tr>
        <td>100</td>
        <td>122</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii">买卖股票的最佳时机
            II</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii/solution">294</a></td>
        <td>57.3%</td>
        <td>简单</td>
        <td>0.6288237558</td>
    </tr>
    <tr>
        <td>101</td>
        <td>297</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree">二叉树的序列化与反序列化</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree/solution">68</a></td>
        <td>44.2%</td>
        <td>困难</td>
        <td>0.6161181212</td>
    </tr>
    <tr>
        <td>102</td>
        <td>283</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/move-zeroes">移动零</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/move-zeroes/solution">396</a></td>
        <td>59.2%</td>
        <td>简单</td>
        <td>0.6027003195</td>
    </tr>
    <tr>
        <td>103</td>
        <td>341</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/flatten-nested-list-iterator">扁平化嵌套列表迭代器</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/flatten-nested-list-iterator/solution">29</a></td>
        <td>62.0%</td>
        <td>中等</td>
        <td>0.5938570472</td>
    </tr>
    <tr>
        <td>104</td>
        <td>238</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/product-of-array-except-self">除自身以外数组的乘积</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/product-of-array-except-self/solution">72</a></td>
        <td>66.0%</td>
        <td>中等</td>
        <td>0.5937264588</td>
    </tr>
    <tr>
        <td>105</td>
        <td>108</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/convert-sorted-array-to-binary-search-tree">将有序数组转换为二叉搜索树</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/convert-sorted-array-to-binary-search-tree/solution">156</a></td>
        <td>69.0%</td>
        <td>简单</td>
        <td>0.5894712826</td>
    </tr>
    <tr>
        <td>106</td>
        <td>371</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sum-of-two-integers">两整数之和</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sum-of-two-integers/solution">63</a></td>
        <td>53.6%</td>
        <td>简单</td>
        <td>0.5818588839</td>
    </tr>
    <tr>
        <td>107</td>
        <td>69</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sqrtx">x 的平方根</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sqrtx/solution">227</a></td>
        <td>37.5%</td>
        <td>简单</td>
        <td>0.5773355857</td>
    </tr>
    <tr>
        <td>108</td>
        <td>36</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-sudoku">有效的数独</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-sudoku/solution">153</a></td>
        <td>58.2%</td>
        <td>中等</td>
        <td>0.561402821</td>
    </tr>
    <tr>
        <td>109</td>
        <td>189</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/rotate-array">旋转数组</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/rotate-array/solution">214</a></td>
        <td>40.3%</td>
        <td>简单</td>
        <td>0.5566099514</td>
    </tr>
    <tr>
        <td>110</td>
        <td>210</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/course-schedule-ii">课程表 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/course-schedule-ii/solution">61</a></td>
        <td>46.1%</td>
        <td>中等</td>
        <td>0.5545283931</td>
    </tr>
    <tr>
        <td>111</td>
        <td>34</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array">在排序数组中查找元素的第一个和最后一个位置</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array/solution">326</a>
        </td>
        <td>38.9%</td>
        <td>中等</td>
        <td>0.548822282</td>
    </tr>
    <tr>
        <td>112</td>
        <td>230</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst">二叉搜索树中第K小的元素</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/kth-smallest-element-in-a-bst/solution">130</a>
        </td>
        <td>68.4%</td>
        <td>中等</td>
        <td>0.5317398267</td>
    </tr>
    <tr>
        <td>113</td>
        <td>237</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/delete-node-in-a-linked-list">删除链表中的节点</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/delete-node-in-a-linked-list/solution">172</a>
        </td>
        <td>79.8%</td>
        <td>简单</td>
        <td>0.5275103075</td>
    </tr>
    <tr>
        <td>114</td>
        <td>75</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sort-colors">颜色分类</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/sort-colors/solution">201</a></td>
        <td>54.5%</td>
        <td>中等</td>
        <td>0.524817177</td>
    </tr>
    <tr>
        <td>115</td>
        <td>334</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/increasing-triplet-subsequence">递增的三元子序列</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/increasing-triplet-subsequence/solution">47</a>
        </td>
        <td>36.7%</td>
        <td>中等</td>
        <td>0.5213577147</td>
    </tr>
    <tr>
        <td>116</td>
        <td>347</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/top-k-frequent-elements">前 K 个高频元素</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/top-k-frequent-elements/solution">121</a></td>
        <td>60.1%</td>
        <td>中等</td>
        <td>0.5172799817</td>
    </tr>
    <tr>
        <td>117</td>
        <td>207</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/course-schedule">课程表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/course-schedule/solution">95</a></td>
        <td>49.1%</td>
        <td>中等</td>
        <td>0.5169124974</td>
    </tr>
    <tr>
        <td>118</td>
        <td>125</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-palindrome">验证回文串</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-palindrome/solution">251</a></td>
        <td>42.3%</td>
        <td>简单</td>
        <td>0.5111401047</td>
    </tr>
    <tr>
        <td>119</td>
        <td>29</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/divide-two-integers">两数相除</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/divide-two-integers/solution">179</a></td>
        <td>19.2%</td>
        <td>中等</td>
        <td>0.485880607</td>
    </tr>
    <tr>
        <td>120</td>
        <td>49</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/group-anagrams">字母异位词分组</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/group-anagrams/solution">138</a></td>
        <td>60.6%</td>
        <td>中等</td>
        <td>0.4814697492</td>
    </tr>
    <tr>
        <td>121</td>
        <td>348</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/design-tic-tac-toe">判定井字棋胜负</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/design-tic-tac-toe/solution">24</a></td>
        <td>56.4%</td>
        <td>中等</td>
        <td>0.4810727899</td>
    </tr>
    <tr>
        <td>122</td>
        <td>328</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/odd-even-linked-list">奇偶链表</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/odd-even-linked-list/solution">99</a></td>
        <td>61.1%</td>
        <td>中等</td>
        <td>0.4710560039</td>
    </tr>
    <tr>
        <td>123</td>
        <td>98</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/validate-binary-search-tree">验证二叉搜索树</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/validate-binary-search-tree/solution">212</a></td>
        <td>28.8%</td>
        <td>中等</td>
        <td>0.4507564616</td>
    </tr>
    <tr>
        <td>124</td>
        <td>340</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-substring-with-at-most-k-distinct-characters">至多包含 K
            个不同字符的最长子串</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/longest-substring-with-at-most-k-distinct-characters/solution">27</a>
        </td>
        <td>46.2%</td>
        <td>困难</td>
        <td>0.4458245212</td>
    </tr>
    <tr>
        <td>125</td>
        <td>150</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/evaluate-reverse-polish-notation">逆波兰表达式求值</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/evaluate-reverse-polish-notation/solution">94</a>
        </td>
        <td>49.0%</td>
        <td>中等</td>
        <td>0.4446041456</td>
    </tr>
    <tr>
        <td>126</td>
        <td>277</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-the-celebrity">搜寻名人</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/find-the-celebrity/solution">23</a></td>
        <td>57.8%</td>
        <td>中等</td>
        <td>0.443794311</td>
    </tr>
    <tr>
        <td>127</td>
        <td>268</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/missing-number">缺失数字</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/missing-number/solution">153</a></td>
        <td>54.0%</td>
        <td>简单</td>
        <td>0.440247858</td>
    </tr>
    <tr>
        <td>128</td>
        <td>387</td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/first-unique-character-in-a-string">字符串中的第一个唯一字符</a></td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/first-unique-character-in-a-string/solution">141</a></td>
        <td>43.1%</td>
        <td>简单</td>
        <td>0.4306744837</td>
    </tr>
    <tr>
        <td>129</td>
        <td>172</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/factorial-trailing-zeroes">阶乘后的零</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/factorial-trailing-zeroes/solution">87</a></td>
        <td>39.6%</td>
        <td>简单</td>
        <td>0.4295218725</td>
    </tr>
    <tr>
        <td>130</td>
        <td>171</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/excel-sheet-column-number">Excel表列序号</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/excel-sheet-column-number/solution">126</a></td>
        <td>66.5%</td>
        <td>简单</td>
        <td>0.4216217772</td>
    </tr>
    <tr>
        <td>131</td>
        <td>127</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-ladder">单词接龙</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/word-ladder/solution">55</a></td>
        <td>39.5%</td>
        <td>中等</td>
        <td>0.410694615</td>
    </tr>
    <tr>
        <td>132</td>
        <td>166</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/fraction-to-recurring-decimal">分数到小数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/fraction-to-recurring-decimal/solution">45</a>
        </td>
        <td>25.6%</td>
        <td>中等</td>
        <td>0.3941951959</td>
    </tr>
    <tr>
        <td>133</td>
        <td>324</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/wiggle-sort-ii">摆动排序 II</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/wiggle-sort-ii/solution">28</a></td>
        <td>34.7%</td>
        <td>中等</td>
        <td>0.3823684465</td>
    </tr>
    <tr>
        <td>134</td>
        <td>242</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-anagram">有效的字母异位词</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/valid-anagram/solution">170</a></td>
        <td>58.3%</td>
        <td>简单</td>
        <td>0.3821690831</td>
    </tr>
    <tr>
        <td>135</td>
        <td>163</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/missing-ranges">缺失的区间</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/missing-ranges/solution">30</a></td>
        <td>24.1%</td>
        <td>中等</td>
        <td>0.3755130675</td>
    </tr>
    <tr>
        <td>136</td>
        <td>217</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/contains-duplicate">存在重复元素</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/contains-duplicate/solution">190</a></td>
        <td>51.5%</td>
        <td>简单</td>
        <td>0.3645335661</td>
    </tr>
    <tr>
        <td>137</td>
        <td>73</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/set-matrix-zeroes">矩阵置零</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/set-matrix-zeroes/solution">80</a></td>
        <td>55.0%</td>
        <td>中等</td>
        <td>0.3017800362</td>
    </tr>
    <tr>
        <td>138</td>
        <td>380</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/insert-delete-getrandom-o1">常数时间插入、删除和获取随机元素</a>
        </td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/insert-delete-getrandom-o1/solution">34</a></td>
        <td>47.7%</td>
        <td>中等</td>
        <td>0.28563882</td>
    </tr>
    <tr>
        <td>139</td>
        <td>116</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node">填充每个节点的下一个右侧节点指针</a>
        </td>
        <td><a target="_blank"
               href="https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node/solution">79</a></td>
        <td>53.5%</td>
        <td>中等</td>
        <td>0.2710111625</td>
    </tr>
    <tr>
        <td>140</td>
        <td>66</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/plus-one">加一</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/plus-one/solution">489</a></td>
        <td>42.9%</td>
        <td>简单</td>
        <td>0.267108547</td>
    </tr>
    <tr>
        <td>141</td>
        <td>326</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/power-of-three">3的幂</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/power-of-three/solution">54</a></td>
        <td>46.4%</td>
        <td>简单</td>
        <td>0.2212253692</td>
    </tr>
    <tr>
        <td>142</td>
        <td>412</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/fizz-buzz">Fizz Buzz</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/fizz-buzz/solution">77</a></td>
        <td>62.6%</td>
        <td>简单</td>
        <td>0.1953161817</td>
    </tr>
    <tr>
        <td>143</td>
        <td>190</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-bits">颠倒二进制位</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/reverse-bits/solution">97</a></td>
        <td>54.6%</td>
        <td>简单</td>
        <td>0.1952510744</td>
    </tr>
    <tr>
        <td>144</td>
        <td>191</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/number-of-1-bits">位1的个数</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/number-of-1-bits/solution">114</a></td>
        <td>64.1%</td>
        <td>简单</td>
        <td>0.1419866715</td>
    </tr>
    <tr>
        <td>145</td>
        <td>285</td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/inorder-successor-in-bst">二叉搜索树中的顺序后继</a></td>
        <td><a target="_blank" href="https://leetcode-cn.com/problems/inorder-successor-in-bst/solution">22</a></td>
        <td>59.8%</td>
        <td>中等</td>
        <td>0</td>
    </tr>
    </tbody>
</table>